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package se.leap.bitmaskclient.base.models;
import java.util.Objects;
/**
* Container to ease passing around a tuple of two objects. This object provides a sensible
* implementation of equals(), returning true if equals() is true on each of the contained
* objects.
*/
public class Pair<F, S> {
public final F first;
public final S second;
/**
* Constructor for a Pair.
*
* @param first the first object in the Pair
* @param second the second object in the pair
*/
public Pair(F first, S second) {
this.first = first;
this.second = second;
}
/**
* Checks the two objects for equality by delegating to their respective
* {@link Object#equals(Object)} methods.
*
* @param o the {@link Pair} to which this one is to be checked for equality
* @return true if the underlying objects of the Pair are both considered
* equal
*/
@Override
public boolean equals(Object o) {
if (!(o instanceof Pair)) {
return false;
}
Pair<?, ?> p = (Pair<?, ?>) o;
return Objects.equals(p.first, first) && Objects.equals(p.second, second);
}
/**
* Compute a hash code using the hash codes of the underlying objects
*
* @return a hashcode of the Pair
*/
@Override
public int hashCode() {
return (first == null ? 0 : first.hashCode()) ^ (second == null ? 0 : second.hashCode());
}
@Override
public String toString() {
return "Pair{" + String.valueOf(first) + " " + String.valueOf(second) + "}";
}
}
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